AMPHIBIA
The animals belonging to this group do not have
scales.
They have a three-chambered heart.
These organisms respire either through their gills
or lungs.
They lay eggs to give birth to their young ones.
These animals are found both in water and on
FROG
land.
Examples of animals belonging to this group are
Frogs, toads and salamanders

REPTILIA
These animals belonging to this group are cold-blooded.
These animals have scales in their body.
They breathe through their lungs.
Most of the animals of this group have a three-chambered heart but
crocodiles have four chambered heart.

They lay eggs with tough
coverings to give birth to their
young ones
They do not need to lay their
eggs in water, unlike
amphibians.
Cobra
Turtle
Lizard
Examples of animals belonging
to this group are Snakes, turtles,
lizards and crocodiles.

AVES
The animals belonging to this group are warm-blooded.
They have a four-chambered heart
They breathe through lungs.
They lay eggs to give birth to their young ones
Duck
Sparrow
White stork
- These animals have an outside layer of feathers.
Crow
They also characterized by two forelimbs, toothless beaked
jaws, and are adapted to fly
Birds belong to this group.

MAMMALIA
The animals belonging to this group are
warm-blooded.
They have a four-chambered heart.
- They are characterized by mammary gland
that produces milk to nourish their young,
hairy skin, sweat and oil glands.
All the animals and human beings giving
birth to their young ones are called
mammals.

NOMENCLATURE
he
process of classification led to the creation of scientific names of the anim

Certain rules have to be followed to write
the scientific names of animals:
The name of the genus begins with a
capital letter.
Kingdom: Plantae
Diviion: Angiospermae
Class: Dicotyledonae
Order: Sapindales
Familv: Anacardiaceae
Genus: Mangifera
Species: indica
The name of the species begins with a
small letter.
When printed, the scientific name is
given in italics.
. When written by hand, the genus name
and the species name have to be
underlined separately.